What picture? However child laborers can be replaced by adult workers so thats one arguement you can make
Answer:
to facilitate war and genocide.
Explanation:
The sentence that contains an unnecessary shift in verb tense is the second one - Lee noticed a problem and alerts a teacher.
It should be <em>alerted, </em>which is the past tense as the first verb <em>noticed.</em>
Sodium and aluminum are in the same period, and therefore have similar chemical properties. It's B.